Transmission mechanism



Feb. 26, 1929. ,y A

G. C. CARHART TRANSMISSION MEGHANISM Filed April '7, 1924 2 Sheets-Sheet 2 IN VEN TOR.

ATTORNEYS,

Patented Feb. 26, 1929.

, y 1,7o3,473- UNITED STATES PATENT OFFICE.

esoneri c. CARHART, or sirmionsn, NEW YORK, AssrGNoR To VBROWN-LIFE GEAR (LOIVIIEANY,y OF SYRACUSE, NEW YORK,`A CORPORATION kOF NEW YORK.

'rRANsr/irssIonY MnoHANrsM. Y

Application led April 7, 1924. Serial No. 704,572.

rlhis invention relates to transmission mechanisms such as are used in motor vehicles, and has for' its object a particularly simple and elcient clutch mechanism for synchronizing relative rotation of the driving and driven parts, after the gear shifting' operations and for relieving the sliiftable partsof the change speed gearing from all vdriving; lforce during the shifting perations. i v

- The invention consists in the novel features and in the combinations and constructions hereinafter set forth and claimed.

In describing this invention reference is had to the vaccompanying` drawings in which like characters designate corresponding parts in all the views.

Figure l is a vertical sectional View of a synchronizing clutch embodying my invention, contiguous yportions of a transmission gearingy beingalso shown. .y

`Figure 2 is an enlarged sectional view on line 2 2, Fig. l.' f n Figure?) is a sectional View on the planeof line 3 3, Fig. l.

Figure 4 is a. fra-f1 portion of the operating means forthe rear clutches, thecontiguous parts of the for such clutches beine,` also shown. f

Figure 5 is' a sectional viewv online 5%5, Fig. 4. .Y

2 is the driven shaft of the mechanism. The driven shaft 2 is journallcd in .f1-bearing in the rear wall 2G of the casing mounted on the ivallvof the.casing;l 7. the shaft 2 preferablyhaving a pilot .bearing 28, in the transmission shaft 6. The case 27 is segear cured to the rear'wall of the transmission rear casing 7 in anyv suitable'` manner as by screws 29. r

The shafts (l and 2.aro connected by a` 'syntype, and inchulcs sections mounted respec` tively on the shafts 6 and 2, and rotatable` therewith, one of these sections bcingshiftable axially, as the section mounted on the shaft 2. f

.36 designates the section mounted'ion` the transmission shaft 6, it being here shown as an inner member or drum of' a conical friction Vclutch and as mounted onthe enlarged hollow head 37 formedintegral with the'reafr end of the transmission vshaft 6, and"located,

yingrs in the collar 50.

outside of the gear case 7 and within the casing 27, the drum 36 being securedV to the head 37 as by rivets 38.

' 39 is the section mounted' on, and rotatable with, the shaft 2 rand also slidable axially thereof,..it being in the form of 'an' outer drum: having a head 40 Which is slidably interlocked Withthe driven Vshaft 2 which is a spline shaft. The sections 36 and'39 are held inengagement by springs 4l interposed between a spring abutment 42 splined on thc Ashaft 2, andv the head-40, and tending' thrust the head. 40 to the left to eng'airethe outer sectionv 39'With the inner sectionft. A thrust bearing 43 is interposed between ,they spring abutment 42 and the inner drum.v 36. f

As hereshoivn the annular Wall of the section 39 is formed with notches 44 in its rear margin and thejhead40 is formedY with tongues 45 linterlocked in such notches, Vthe head being secured to the annular Wall in any suitable manner as byl a lock or snap ringe 46. y

` .The third clutch for positively connecting' h and disconnecting the shafts 6' and 2 comientary plan view of av47. ',TheheadiV 48 is splined to the slmft2.

The means for shifting the *friction clutch section 39 Vandthe head 48 comprises al collar slidableaxiallyl-of the shaft 2, a yoke or fork 51 mounted onv a rockshaft 52 journalled in 'the casing;` 27 andfextending to the outside thereof7 and a connection between the clutch pedal and the rock shaft 52.l The collar 50 is normally spaced apart from the head 40 of the friction olutclnso that there isa Alost-,.motiml between the collar 50 and Vtho head 40, andthe collar 50 isconncel ed to the head. 48 to shift the same by means of one or more keys 53, slidable in lengthwise grooves 54 inthe periphery of the shaft 2, and inter-` locked at 55 at their front ends with the hea d 48, and having tongues or' shoulders 56 yat their inner ends extending into radial open- The shaft 52 is preferably operatedifrom lthe main clutch pedal of the motor vehicle equipped with this mechanism; The connection between this mechanism and theV shaft 52 comprises alink? pivoted 'at its del en@ eeneeetef inner dimm, he ouuel 'd1-u1u being also shift- 7 d Y ulteble megue to the Y axlely7 mld heVmg a hub enelosmg the shaft f2; t 1s here vshown es com- K e :d mtelloeked with the other its rear. to en angle lever 5S, mounted en moves of ehe d rljven shaft, smal keys,A

e stud 60 Sup )o'ed Vby the cese 27, and this angle level' 59 1e cmmeeed to a oek: erm 61 on the outer end of the Dmflng depl'eff pertledy oaf ''uly meen;Y

1 1 e outef drum, md 'oe oute' drum Y ,si hub arranged in he path of the be engaged heleby during Shng l* m one direction i0, decuteh,

the angle levee if; e 1 mining; on the outer drum to U5 link (S2 and immefli leg fee'too, eed mesme for tive eluch beni l Y thereafter eeusee fm J om meehenem, a weil of head 410 of f^`= ielemeeon elmft ee L on 39 and d enfl jao en@L nezel 70 eeeio' e me CM ,5 .c1 Deng jomnelled i i; ks Wh H21- u? onge-d well. n C ileh col teeth Clutch pedal. des s comprising Sections on Said 7T pleseed ehe gzjeeeg; rel@ wid J Sp vely Suid eeeiofe eompreing of @I d ve ejem' Shi! coe-e n nen'xbe'e and poevely inopemon ie 1 A the geel@ me t fe] Y, melglbez'ey the friction member idk/1 oy nezvjv' hen theeueeh pedzllie moune on. zhe 'i'eeemieeon fsha'f'; being 25 ege *she main dutch formed w1 e., hilow heb hevngnemml S0v eeeons and 3: me en (iven Shaft a d located on ynehlonze :my relative foH s :ha'f 'udjeeen' seid Weil and n@ me huo also havmg am ondule web portlo'p 'rom the pedal 34T L gagged #with the ing has been The-*U el 31S a 'pmt wie clutch Pgxezme, ne eeelon o Sha't meludl lg en eX- 1. le e transe msm, the .I d mouned 'bel-een to 1"o- 35 bom lon `z f 'oveode amelljy theeof to 90 I `Z o' eeh out of and into eneoneeefne e eeth ofeed heb, mounted 1 Speeove.. 't n .en Wh Seid head to-n mounted on the i he el 'he drven Shaft and e pl'eug im inner dum lmvlug im out 'h Seid 51 Tee shaft 95 zo-n clutch eaxxfeee? i'he ni'v Shaft heffing af ed eldebe axially lengthwise gfowes and e ,1 idebe in eome 1b el'e in the of toe om/es, the z eh eeeon con* pfui "heee )y in one 15 and Secured o the imm, emile of' fle keye 1 e heed; eoaet- 10e inner (1X1-11 low heb he. me een* nml ae Yen she ft Shift 11n of fl'ew York,

they Gleich sjoeti n in um @Hy loo-theel he: dqlneludmg 'wmgg Jie cylindrical Well ai! @ving axial movement Telef 6U eh which 

